Basic Principles,Key Technologies,and Future Prospects of Wireless Security Transmission Based on Directional Modulation
LU Jinhui;WAN Siming;QIN Yaolu;WANG Zhengwang;LU Zaoyu;SHU Feng;XU Qingxian;School of Electronic and Optical Engineering,Nanjing University of Science and Technology;College of Computer and Information,Fujian Agriculture and Forestry University;National Mobile Communications Research Laboratory,Southeast University;College of Computer and Information,Taiwan University of China;
Directional modulation( DM),as the key technology of wireless physical layer security transmission,can improve the secrecy performance of the system. However,due to the angle measurement error,we need to consider the angle error to improve system security performance when designing useful signal beamforming vector and artificial noise( AN) projection matrix. The paper first describes system model of DM. Then we introduce the direction of arrival( DOA) estimation technique,three algorithms of robust beamforming design and power allocation technology. Simulations show that the performance of the robust beamforming synthesis method is obviously better than that of the non-robust synthesis method,and the optimal power allocation between the confidential information and the AN can significantly improve the security rate performance. Finally,the future new research directions and challenging problems are presented.
【CateGory Index】： TN918